body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f9;
}
.container {
    width: 90%;
    max-width: 600px;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
h1 {
    text-align: center;
    color: #333;
}
    width: calc(100% - 22px);
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 20px;
}
button {
    width: 100%;
    padding: 10px;
    background-color: #5cb85c;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
}
button:hover {
    background-color: #4cae4c;
}
ul {
    list-style-type: none;
    padding: 0;
}
li {
    padding: 10px;
    background-color: #fafafa;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
li:nth-child(odd) {
    background-color: #f1f1f1;
}
.remove-btn {
    background-color: #d9534f;
    color: white;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
}
.remove-btn:hover {
    background-color: #c9302c;
}